Circuit closer



May 14, 1929. L, WO 1,713,460

CIRCUIT CLOSER Filed July 23, 1924 I I I E L..J

fies-lie 6. 1/6062 INVENTQR W 486:

ATTORNEY Patented May 14, 1929.

UNITED STATES PATENT OFFICE.

CIRCUIT CLOSER.

Application filed July 23, 1924. Serial No. 727,753.

This invention relates to automatic switches, an object being to provide a switch which maybe automatically operated by closing an electric circuit for the purpose of controlling a separate circuit.

Another object of the invention is the provision of a switch of the above character which is simple in construction, reliable and efficient in use and in which provision is made to overcome the sudden action of the core of a solenoid used to operate the switch.

WVith the above and other objects in view, the invention further includes the following novel features and details of construction to be hereinafter more fully described, illustrated in the accompanying drawing and pointed out in the appended claim.

In the drawing Figure 1 is an elevation illustrating the invcntion.

Figure 2 is a detail perspective View of the switch arm.

Referring to the drawing in detail wherein like characters of reference denote corresponding parts, the reference character 10 indicates a housing within which the switch is positioned. The switch includes a pivotally movable arm illustrated in Figure 2 of the drawing and this arm includes a sleeve 44 which is mounted upon a stud 45 carried by the housing. Extending from the hub or sleeve 44 is an arm 46 which has connected to its'outer end through the medium of a spring 47, the core 32 of a solenoid 25. This solenoid is adapted to be connected in circuit with a source of current throu h the medium of conductors A and A.

The switch further includes an arm 31 which extends from the hub 44 and this arm normally engages a stop 48. Spaced from this stop and arranged in the path of movement of the arm 31 is a contact 31 which may be connected in an electric circuit by means of a conductor 30. The arm 31 thus operates between the stop 49 and the contact 31 and its movement in opposite directionsis thus limited.

Also extending from the hub or sleeve 44 is an arm and connected-to this arm is one end of a spring 49, the opposite end of the spring being anchored as shown at 51. The spring 49 thus serves to yieldingly hold the arm 31 against the stop 48. A conductor 30 is connected to the hub or sleeve 44 so that when the arm 31 engages the contact 31 a circuit may be completed through the switch.

The spring 47 provides a flexible connection between the core of the solenoid and the switch arm 46 and permits proper relative movement between the switch arm 31 and the core of the solenoid, the spring 49 acting to yieldingly hold the arm 31 against the stop 48.

The invention is susceptible of various changes in its form, proportions and minor details of construction and the right is herein reserved to make such changes as properly fall within the scope of the appended claim.

Having described the invention what is claimed is In a device of the character described, a housing, a switch including a solenoid located in the housing, a stationary pivot stud adjacent the solenoid, a hub radially mounted upon the stud, a switch arm extending radially outward from the periphery of the hub, a stationary contact and stop arranged in spaced relation and between which the outer end of the switch arm is disposed, oppositely disposed arms projecting from the said hub at right angles to the switch arm, a hook formed at the end of one of the latter arms, yieldable connection between the core of the solenoid and the said arm, and means yieldably connected with the outer end-of the other arm of the oppositely disposed arms, whereby to normally maintain the outer end of the switch arm in engagement with the stop, the energizing of the solenoid causing the switch arm to be moved into engagement with the stop, the yieldable means between the core of the solenoid and the arm acting as a cushion to the sudden movement of the solenoid.

In testimony whereof I aflix my signature.

LESLIE C. IVOOD. 

